Do you want me to make all your other nails the same length as the short ones?
Has it been a while since you had your nails done?
この場合、次のような言い方ができますよ。
ーDo you want me to make all your other nails the same length as the short ones?
「他の爪を短い爪と同じ長さにして欲しいですか？」＝「短い爪に合わせますか？」
ーHas it been a while since you had your nails done?
「ネイルは久しぶりですか？」
to have one's nails done で「ネイルをしてもらう」ことを言えます。
ご参考まで！
カナダ 
